No, it's actually the other way round...

FIRST a word appears in live language (usually it starts in some specific environment: region, age/social group, subculture, etc.) and THEN this new word (or its new meaning) is recognised and acknowledged by dictionaries (after discussion among experts, where some of them would typically discourage the new word or its new use). But the key point there is that language is LIVE, rather than dictated upon us by dictionaries! And if the word becomes massively used, even its strongest opponents eventually have to accept and acknowledge it. The same goes with Bitcoin!